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authorGeorg Brandl <georg@python.org>2009-12-20 14:21:27 (GMT)
committerGeorg Brandl <georg@python.org>2009-12-20 14:21:27 (GMT)
commit11b636291a4216f4a27145e07801d0fd2783977c (patch)
treedff86d4bdcd847047484343624b330f36a843130 /Doc/faq
parent14278694dd832df7cebac303dd6765ac35844fe7 (diff)
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#7495: more review fixes.
Diffstat (limited to 'Doc/faq')
-rw-r--r--Doc/faq/programming.rst18
1 files changed, 10 insertions, 8 deletions
diff --git a/Doc/faq/programming.rst b/Doc/faq/programming.rst
index 8fc7666..3c9e5f4 100644
--- a/Doc/faq/programming.rst
+++ b/Doc/faq/programming.rst
@@ -182,7 +182,7 @@ Note that the functionally-oriented builtins such as :func:`map`, :func:`zip`,
and friends can be a convenient accelerator for loops that perform a single
task. For example to pair the elements of two lists together::
- >>> list(zip([1,2,3], [4,5,6]))
+ >>> list(zip([1, 2, 3], [4, 5, 6]))
[(1, 4), (2, 5), (3, 6)]
or to compute a number of sines::
@@ -192,14 +192,16 @@ or to compute a number of sines::
The operation completes very quickly in such cases.
-Other examples include the ``join()`` and ``split()`` methods of string objects.
+Other examples include the ``join()`` and ``split()`` :ref:`methods
+of string objects <string-methods>`.
+
For example if s1..s7 are large (10K+) strings then
``"".join([s1,s2,s3,s4,s5,s6,s7])`` may be far faster than the more obvious
``s1+s2+s3+s4+s5+s6+s7``, since the "summation" will compute many
subexpressions, whereas ``join()`` does all the copying in one pass. For
-manipulating strings, use the ``replace()`` and the ``format()`` methods on
-string objects. Use regular expressions only when you're not dealing with
-constant string patterns.
+manipulating strings, use the ``replace()`` and the ``format()`` :ref:`methods
+on string objects <string-methods>`. Use regular expressions only when you're
+not dealing with constant string patterns.
Be sure to use the :meth:`list.sort` builtin method to do sorting, and see the
`sorting mini-HOWTO <http://wiki.python.org/moin/HowTo/Sorting>`_ for examples
@@ -414,8 +416,8 @@ It's good practice if you import modules in the following order:
Never use relative package imports. If you're writing code that's in the
``package.sub.m1`` module and want to import ``package.sub.m2``, do not just
-write ``from . import m2``, even though it's legal. Write ``from package.sub import
-m2`` instead. See :pep:`328` for details.
+write ``from . import m2``, even though it's legal. Write ``from package.sub
+import m2`` instead. See :pep:`328` for details.
It is sometimes necessary to move imports to a function or class to avoid
problems with circular imports. Gordon McMillan says:
@@ -860,7 +862,7 @@ To convert, e.g., the number 144 to the string '144', use the built-in type
constructor :func:`str`. If you want a hexadecimal or octal representation, use
the built-in functions :func:`hex` or :func:`oct`. For fancy formatting, see
the :ref:`string-formatting` section, e.g. ``"{:04d}".format(144)`` yields
-``'0144'`` and ``"{:.3f}" % (1/3)`` yields ``'0.333'``.
+``'0144'`` and ``"{:.3f}".format(1/3)`` yields ``'0.333'``.
How do I modify a string in place?